The ARPANET after twenty years

The ARPANET began operations in 1969 with four nodes as an experiment in resource sharing among computers. It has evolved into a worldwide research network of over 60,000 nodes, influencing the design of other networks in business, education, and government. It demonstrated the speed and reliability of packet-switching networks. Its protocols have served as the models for international standards. And yet the significance of the ARPANET lies not in its technology, but in the profound alterations networking has produced in human practices. Network designers must now turn their attention to the discourses of scientific technology, business, education, and government that are being mixed together in the milieux of networking, and in particular the conflicts and misunderstandings that arise from the different world views of these discourses

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Computational aerodynamics and supercomputers

Some of the progress in computational aerodynamics over the last decade is reviewed. The Numerical Aerodynamic Simulation Program objectives, computational goals, and implementation plans are described

Application of supercomputers to computational aerodynamics

Computers are playing an increasingly important role in the field of aerodynamics such that they now serve as a major complement to wind tunnels in aerospace research and development. Factors pacing advances in computational aerodynamics are identified, including the amount of computational power required to take the next major step in the discipline. Example results obtained from the successively refined forms of the governing equations are discussed, both in the context of levels of computer power required and the degree to which they either further the frontiers of research or apply to problems of practical importance. Finally, the Numerical Aerodynamic Simulation (NAS) Program - with its 1988 target of achieving a sustained computational rate of 1 billion floating point operations per second and operating with a memory of 240 million words - is discussed in terms of its goals and its projected effect on the future of computational aerodynamics

The new space and Earth science information systems at NASA's archive

The on-line interactive systems of the National Space Science Data Center (NSSDC) are examined. The worldwide computer network connections that allow access to NSSDC users are outlined. The services offered by the NSSDC new technology on-line systems are presented, including the IUE request system, Total Ozone Mapping Spectrometer (TOMS) data, and data sets on astrophysics, atmospheric science, land sciences, and space plasma physics. Plans for future increases in the NSSDC data holdings are considered

Status and projections of the NAS program

NASA's Numerical Aerodynamic Simulation (NAS) Program has completed development of the initial operating configuration of the NAS Processing System Network (NPSN). This is the first milestone in the continuing and pathfinding effort to provide state-of-the-art supercomputing for aeronautics research and development. The NPSN, available to a nation-wide community of remote users, provides a uniform UNIX environment over a network of host computers ranging from the Cray-2 supercomputer to advanced scientific workstations. This system, coupled with a vendor-independent base of common user interface and network software, presents a new paradigm for supercomputing environments. Background leading to the NAS program, its programmatic goals and strategies, technical goals and objectives, and the development activities leading to the current NPSN configuration are presented. Program status, near-term plans, and plans for the next major milestone, the extended operating configuration, are also discussed

Robot computer problem solving system

The conceptual, experimental, and practical phases of developing a robot computer problem solving system are outlined. Robot intelligence, conversion of the programming language SAIL to run under the THNEX monitor, and the use of the network to run several cooperating jobs at different sites are discussed

Numerical Aerodynamic Simulation (NAS)

The history of the Numerical Aerodynamic Simulation Program, which is designed to provide a leading-edge capability to computational aerodynamicists, is traced back to its origin in 1975. Factors motivating its development and examples of solutions to successively refined forms of the governing equations are presented. The NAS Processing System Network and each of its eight subsystems are described in terms of function and initial performance goals. A proposed usage allocation policy is discussed and some initial problems being readied for solution on the NAS system are identified

The ARPANET Into the Internet: A Tale of Two Networks

The Internet is a split civilian and military entity in physical and social construction. Investigating this split entity in all its manifestations is an important venture, but this study explores the split social construction of the ARPANET’s reported history. ARPANET/Internet literature shows a division between literature that does and does not include the history of the intelligence communities (IC) working relationship with the pre-privatized ARPANET. Two different genres of literature are discussed, charted in a Table and compared to aspects of the ARPANET’s known and reported developmental and privatization history. Different origin stories are discussed in a general way; then a pattern in the literature is explored, namely, how illegally and libelous spy data gathered in 1960s intelligence community (IC) operations and processed through the pre-privatized ARPANET, is acknowledged in indirect or second-hand ways, when ARPA demonstrated feasibility of the ARPANET ; while after privatization the literature acknowledges IC spying through the commercialized Internet in firsthand and direct ways. The study examines how earlier and contemporary literature continues contesting the role that 1960s IC spy data played in demonstrating the feasibility of the ARPANET; a prerequisite test for the privatization of the ARPANET. Findings indicate ARPANET histories have excluded direct reporting about how ARPA and the IC demonstrated ARPANET’s feasibility prior to privatization. The conclusion is that understanding history about how ARPA and the IC demonstrated ARPANET’s feasibility, makes it easier to comprehend reports about how the Internet serves counterinsurgency purposes. The study confirms ongoing debates about the social construction of Internet history.